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* Copyright (c) 2003-2007 Tim Kientzle
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* Copyright (c) 2009 Andreas Henriksson <andreas@fatal.se>
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* Copyright (c) 2009-2011 Michihiro NAKAJIMA
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "archive_platform.h"
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__FBSDID("$FreeBSD: head/lib/libarchive/archive_read_support_format_iso9660.c 201246 2009-12-30 05:30:35Z kientzle $");
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/* #include <stdint.h> */ /* See archive_platform.h */
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#include "archive_endian.h"
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#include "archive_entry.h"
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#include "archive_private.h"
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#include "archive_read_private.h"
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#include "archive_string.h"
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* An overview of ISO 9660 format:
57
* Each disk is laid out as follows:
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* * 32k reserved for private use
59
* * Volume descriptor table. Each volume descriptor
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* is 2k and specifies basic format information.
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* The "Primary Volume Descriptor" (PVD) is defined by the
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* standard and should always be present; other volume
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* descriptors include various vendor-specific extensions.
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* * Files and directories. Each file/dir is specified by
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* an "extent" (starting sector and length in bytes).
66
* Dirs are just files with directory records packed one
67
* after another. The PVD contains a single dir entry
68
* specifying the location of the root directory. Everything
69
* else follows from there.
71
* This module works by first reading the volume descriptors, then
72
* building a list of directory entries, sorted by starting
73
* sector. At each step, I look for the earliest dir entry that
74
* hasn't yet been read, seek forward to that location and read
75
* that entry. If it's a dir, I slurp in the new dir entries and
76
* add them to the heap; if it's a regular file, I return the
77
* corresponding archive_entry and wait for the client to request
78
* the file body. This strategy allows us to read most compliant
79
* CDs with a single pass through the data, as required by libarchive.
81
#define LOGICAL_BLOCK_SIZE 2048
82
#define SYSTEM_AREA_BLOCK 16
84
/* Structure of on-disk primary volume descriptor. */
85
#define PVD_type_offset 0
86
#define PVD_type_size 1
87
#define PVD_id_offset (PVD_type_offset + PVD_type_size)
89
#define PVD_version_offset (PVD_id_offset + PVD_id_size)
90
#define PVD_version_size 1
91
#define PVD_reserved1_offset (PVD_version_offset + PVD_version_size)
92
#define PVD_reserved1_size 1
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#define PVD_system_id_offset (PVD_reserved1_offset + PVD_reserved1_size)
94
#define PVD_system_id_size 32
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#define PVD_volume_id_offset (PVD_system_id_offset + PVD_system_id_size)
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#define PVD_volume_id_size 32
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#define PVD_reserved2_offset (PVD_volume_id_offset + PVD_volume_id_size)
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#define PVD_reserved2_size 8
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#define PVD_volume_space_size_offset (PVD_reserved2_offset + PVD_reserved2_size)
100
#define PVD_volume_space_size_size 8
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#define PVD_reserved3_offset (PVD_volume_space_size_offset + PVD_volume_space_size_size)
102
#define PVD_reserved3_size 32
103
#define PVD_volume_set_size_offset (PVD_reserved3_offset + PVD_reserved3_size)
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#define PVD_volume_set_size_size 4
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#define PVD_volume_sequence_number_offset (PVD_volume_set_size_offset + PVD_volume_set_size_size)
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#define PVD_volume_sequence_number_size 4
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#define PVD_logical_block_size_offset (PVD_volume_sequence_number_offset + PVD_volume_sequence_number_size)
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#define PVD_logical_block_size_size 4
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#define PVD_path_table_size_offset (PVD_logical_block_size_offset + PVD_logical_block_size_size)
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#define PVD_path_table_size_size 8
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#define PVD_type_1_path_table_offset (PVD_path_table_size_offset + PVD_path_table_size_size)
112
#define PVD_type_1_path_table_size 4
113
#define PVD_opt_type_1_path_table_offset (PVD_type_1_path_table_offset + PVD_type_1_path_table_size)
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#define PVD_opt_type_1_path_table_size 4
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#define PVD_type_m_path_table_offset (PVD_opt_type_1_path_table_offset + PVD_opt_type_1_path_table_size)
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#define PVD_type_m_path_table_size 4
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#define PVD_opt_type_m_path_table_offset (PVD_type_m_path_table_offset + PVD_type_m_path_table_size)
118
#define PVD_opt_type_m_path_table_size 4
119
#define PVD_root_directory_record_offset (PVD_opt_type_m_path_table_offset + PVD_opt_type_m_path_table_size)
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#define PVD_root_directory_record_size 34
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#define PVD_volume_set_id_offset (PVD_root_directory_record_offset + PVD_root_directory_record_size)
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#define PVD_volume_set_id_size 128
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#define PVD_publisher_id_offset (PVD_volume_set_id_offset + PVD_volume_set_id_size)
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#define PVD_publisher_id_size 128
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#define PVD_preparer_id_offset (PVD_publisher_id_offset + PVD_publisher_id_size)
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#define PVD_preparer_id_size 128
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#define PVD_application_id_offset (PVD_preparer_id_offset + PVD_preparer_id_size)
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#define PVD_application_id_size 128
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#define PVD_copyright_file_id_offset (PVD_application_id_offset + PVD_application_id_size)
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#define PVD_copyright_file_id_size 37
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#define PVD_abstract_file_id_offset (PVD_copyright_file_id_offset + PVD_copyright_file_id_size)
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#define PVD_abstract_file_id_size 37
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#define PVD_bibliographic_file_id_offset (PVD_abstract_file_id_offset + PVD_abstract_file_id_size)
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#define PVD_bibliographic_file_id_size 37
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#define PVD_creation_date_offset (PVD_bibliographic_file_id_offset + PVD_bibliographic_file_id_size)
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#define PVD_creation_date_size 17
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#define PVD_modification_date_offset (PVD_creation_date_offset + PVD_creation_date_size)
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#define PVD_modification_date_size 17
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#define PVD_expiration_date_offset (PVD_modification_date_offset + PVD_modification_date_size)
140
#define PVD_expiration_date_size 17
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#define PVD_effective_date_offset (PVD_expiration_date_offset + PVD_expiration_date_size)
142
#define PVD_effective_date_size 17
143
#define PVD_file_structure_version_offset (PVD_effective_date_offset + PVD_effective_date_size)
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#define PVD_file_structure_version_size 1
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#define PVD_reserved4_offset (PVD_file_structure_version_offset + PVD_file_structure_version_size)
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#define PVD_reserved4_size 1
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#define PVD_application_data_offset (PVD_reserved4_offset + PVD_reserved4_size)
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#define PVD_application_data_size 512
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#define PVD_reserved5_offset (PVD_application_data_offset + PVD_application_data_size)
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#define PVD_reserved5_size (2048 - PVD_reserved5_offset)
152
/* TODO: It would make future maintenance easier to just hardcode the
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* above values. In particular, ECMA119 states the offsets as part of
154
* the standard. That would eliminate the need for the following check.*/
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#if PVD_reserved5_offset != 1395
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#error PVD offset and size definitions are wrong.
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/* Structure of optional on-disk supplementary volume descriptor. */
161
#define SVD_type_offset 0
162
#define SVD_type_size 1
163
#define SVD_id_offset (SVD_type_offset + SVD_type_size)
164
#define SVD_id_size 5
165
#define SVD_version_offset (SVD_id_offset + SVD_id_size)
166
#define SVD_version_size 1
168
#define SVD_reserved1_offset 72
169
#define SVD_reserved1_size 8
170
#define SVD_volume_space_size_offset 80
171
#define SVD_volume_space_size_size 8
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#define SVD_escape_sequences_offset (SVD_volume_space_size_offset + SVD_volume_space_size_size)
173
#define SVD_escape_sequences_size 32
175
#define SVD_logical_block_size_offset 128
176
#define SVD_logical_block_size_size 4
177
#define SVD_type_L_path_table_offset 140
178
#define SVD_type_M_path_table_offset 148
180
#define SVD_root_directory_record_offset 156
181
#define SVD_root_directory_record_size 34
182
#define SVD_file_structure_version_offset 881
183
#define SVD_reserved2_offset 882
184
#define SVD_reserved2_size 1
185
#define SVD_reserved3_offset 1395
186
#define SVD_reserved3_size 653
188
/* FIXME: validate correctness of last SVD entry offset. */
190
/* Structure of an on-disk directory record. */
191
/* Note: ISO9660 stores each multi-byte integer twice, once in
192
* each byte order. The sizes here are the size of just one
193
* of the two integers. (This is why the offset of a field isn't
194
* the same as the offset+size of the previous field.) */
195
#define DR_length_offset 0
196
#define DR_length_size 1
197
#define DR_ext_attr_length_offset 1
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#define DR_ext_attr_length_size 1
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#define DR_extent_offset 2
200
#define DR_extent_size 4
201
#define DR_size_offset 10
202
#define DR_size_size 4
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#define DR_date_offset 18
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#define DR_date_size 7
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#define DR_flags_offset 25
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#define DR_flags_size 1
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#define DR_file_unit_size_offset 26
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#define DR_file_unit_size_size 1
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#define DR_interleave_offset 27
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#define DR_interleave_size 1
211
#define DR_volume_sequence_number_offset 28
212
#define DR_volume_sequence_number_size 2
213
#define DR_name_len_offset 32
214
#define DR_name_len_size 1
215
#define DR_name_offset 33
218
static const unsigned char zisofs_magic[8] = {
219
0x37, 0xE4, 0x53, 0x96, 0xC9, 0xDB, 0xD6, 0x07
223
/* Set 1 if this file compressed by paged zlib */
225
int pz_log2_bs; /* Log2 of block size */
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uint64_t pz_uncompressed_size;
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unsigned char *uncompressed_buffer;
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size_t uncompressed_buffer_size;
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unsigned char header[16];
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unsigned char *block_pointers;
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size_t block_pointers_alloc;
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size_t block_pointers_size;
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size_t block_pointers_avail;
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uint32_t block_avail;
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/* Set 1 if this file compressed by paged zlib */
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uint64_t offset;/* Offset on disk. */
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uint64_t size; /* File size in bytes. */
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struct content *next;
259
/* In-memory storage for a directory record. */
261
struct file_info *use_next;
262
struct file_info *parent;
263
struct file_info *next;
264
struct file_info *re_next;
266
uint64_t key; /* Heap Key. */
267
uint64_t offset; /* Offset on disk. */
268
uint64_t size; /* File size in bytes. */
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uint32_t ce_offset; /* Offset of CE. */
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uint32_t ce_size; /* Size of CE. */
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char rr_moved; /* Flag to rr_moved. */
272
char rr_moved_has_re_only;
273
char re; /* Having RRIP "RE" extension. */
275
uint64_t cl_offset; /* Having RRIP "CL" extension. */
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int birthtime_is_set;
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time_t birthtime; /* File created time. */
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time_t mtime; /* File last modified time. */
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time_t atime; /* File last accessed time. */
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time_t ctime; /* File attribute change time. */
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uint64_t rdev; /* Device number. */
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struct archive_string name; /* Pathname */
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char name_continues; /* Non-zero if name continues */
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struct archive_string symlink;
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char symlink_continues; /* Non-zero if link continues */
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/* Set 1 if this file compressed by paged zlib(zisofs) */
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int pz_log2_bs; /* Log2 of block size */
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uint64_t pz_uncompressed_size;
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/* Set 1 if this file is multi extent. */
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struct content *first;
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struct content **last;
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struct file_info *first;
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struct file_info **last;
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struct file_info **files;
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#define ISO9660_MAGIC 0x96609660
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int opt_support_joliet;
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int opt_support_rockridge;
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struct archive_string pathname;
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char seenRockridge; /* Set true if RR extensions are used. */
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char seenSUSP; /* Set true if SUSP is beging used. */
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unsigned char suspOffset;
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struct file_info *rr_moved;
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struct read_ce_queue {
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uint64_t offset;/* Offset of CE on disk. */
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struct file_info *file;
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int64_t previous_number;
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struct archive_string previous_pathname;
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struct file_info *use_files;
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struct heap_queue pending_files;
342
struct file_info *first;
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struct file_info **last;
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struct file_info *first;
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struct file_info **last;
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uint64_t current_position;
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ssize_t logical_block_size;
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uint64_t volume_size; /* Total size of volume in bytes. */
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int32_t volume_block;/* Total size of volume in logical blocks. */
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int location; /* Location of Extent. */
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off_t entry_sparse_offset;
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int64_t entry_bytes_remaining;
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struct zisofs entry_zisofs;
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struct content *entry_content;
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static int archive_read_format_iso9660_bid(struct archive_read *);
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static int archive_read_format_iso9660_options(struct archive_read *,
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const char *, const char *);
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static int archive_read_format_iso9660_cleanup(struct archive_read *);
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static int archive_read_format_iso9660_read_data(struct archive_read *,
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const void **, size_t *, off_t *);
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static int archive_read_format_iso9660_read_data_skip(struct archive_read *);
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static int archive_read_format_iso9660_read_header(struct archive_read *,
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struct archive_entry *);
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static const char *build_pathname(struct archive_string *, struct file_info *);
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static void dump_isodirrec(FILE *, const unsigned char *isodirrec);
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static time_t time_from_tm(struct tm *);
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static time_t isodate17(const unsigned char *);
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static time_t isodate7(const unsigned char *);
382
static int isBootRecord(struct iso9660 *, const unsigned char *);
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static int isVolumePartition(struct iso9660 *, const unsigned char *);
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static int isVDSetTerminator(struct iso9660 *, const unsigned char *);
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static int isJolietSVD(struct iso9660 *, const unsigned char *);
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static int isSVD(struct iso9660 *, const unsigned char *);
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static int isEVD(struct iso9660 *, const unsigned char *);
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static int isPVD(struct iso9660 *, const unsigned char *);
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static int next_cache_entry(struct archive_read *, struct iso9660 *,
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struct file_info **);
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static int next_entry_seek(struct archive_read *a, struct iso9660 *iso9660,
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struct file_info **pfile);
393
static struct file_info *
394
parse_file_info(struct archive_read *a,
395
struct file_info *parent, const unsigned char *isodirrec);
396
static int parse_rockridge(struct archive_read *a,
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struct file_info *file, const unsigned char *start,
398
const unsigned char *end);
399
static int register_CE(struct archive_read *a, int32_t location,
400
struct file_info *file);
401
static int read_CE(struct archive_read *a, struct iso9660 *iso9660);
402
static void parse_rockridge_NM1(struct file_info *,
403
const unsigned char *, int);
404
static void parse_rockridge_SL1(struct file_info *,
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const unsigned char *, int);
406
static void parse_rockridge_TF1(struct file_info *,
407
const unsigned char *, int);
408
static void parse_rockridge_ZF1(struct file_info *,
409
const unsigned char *, int);
410
static void register_file(struct iso9660 *, struct file_info *);
411
static void release_files(struct iso9660 *);
412
static unsigned toi(const void *p, int n);
413
static inline void re_add_entry(struct iso9660 *, struct file_info *);
414
static inline struct file_info * re_get_entry(struct iso9660 *);
415
static inline int rede_add_entry(struct file_info *);
416
static inline struct file_info * rede_get_entry(struct file_info *);
417
static inline void cache_add_entry(struct iso9660 *iso9660,
418
struct file_info *file);
419
static inline struct file_info *cache_get_entry(struct iso9660 *iso9660);
420
static void heap_add_entry(struct heap_queue *heap,
421
struct file_info *file, uint64_t key);
422
static struct file_info *heap_get_entry(struct heap_queue *heap);
424
#define add_entry(iso9660, file) \
425
heap_add_entry(&((iso9660)->pending_files), file, file->offset)
426
#define next_entry(iso9660) \
427
heap_get_entry(&((iso9660)->pending_files))
430
archive_read_support_format_iso9660(struct archive *_a)
432
struct archive_read *a = (struct archive_read *)_a;
433
struct iso9660 *iso9660;
436
iso9660 = (struct iso9660 *)malloc(sizeof(*iso9660));
437
if (iso9660 == NULL) {
438
archive_set_error(&a->archive, ENOMEM, "Can't allocate iso9660 data");
439
return (ARCHIVE_FATAL);
441
memset(iso9660, 0, sizeof(*iso9660));
442
iso9660->magic = ISO9660_MAGIC;
443
iso9660->cache_files.first = NULL;
444
iso9660->cache_files.last = &(iso9660->cache_files.first);
445
iso9660->re_files.first = NULL;
446
iso9660->re_files.last = &(iso9660->re_files.first);
447
/* Enable to support Joliet extensions by default. */
448
iso9660->opt_support_joliet = 1;
449
/* Enable to support Rock Ridge extensions by default. */
450
iso9660->opt_support_rockridge = 1;
452
r = __archive_read_register_format(a,
455
archive_read_format_iso9660_bid,
456
archive_read_format_iso9660_options,
457
archive_read_format_iso9660_read_header,
458
archive_read_format_iso9660_read_data,
459
archive_read_format_iso9660_read_data_skip,
460
archive_read_format_iso9660_cleanup);
462
if (r != ARCHIVE_OK) {
471
archive_read_format_iso9660_bid(struct archive_read *a)
473
struct iso9660 *iso9660;
476
const unsigned char *p;
479
iso9660 = (struct iso9660 *)(a->format->data);
482
* Skip the first 32k (reserved area) and get the first
483
* 8 sectors of the volume descriptor table. Of course,
484
* if the I/O layer gives us more, we'll take it.
486
#define RESERVED_AREA (SYSTEM_AREA_BLOCK * LOGICAL_BLOCK_SIZE)
487
h = __archive_read_ahead(a,
488
RESERVED_AREA + 8 * LOGICAL_BLOCK_SIZE,
492
p = (const unsigned char *)h;
494
/* Skip the reserved area. */
495
bytes_read -= RESERVED_AREA;
498
/* Check each volume descriptor. */
500
for (; bytes_read > LOGICAL_BLOCK_SIZE;
501
bytes_read -= LOGICAL_BLOCK_SIZE, p += LOGICAL_BLOCK_SIZE) {
502
/* Do not handle undefined Volume Descriptor Type. */
503
if (p[0] >= 4 && p[0] <= 254)
505
/* Standard Identifier must be "CD001" */
506
if (memcmp(p + 1, "CD001", 5) != 0)
508
if (!iso9660->primary.location) {
509
if (isPVD(iso9660, p))
512
if (!iso9660->joliet.location) {
513
if (isJolietSVD(iso9660, p))
516
if (isBootRecord(iso9660, p))
518
if (isEVD(iso9660, p))
520
if (isSVD(iso9660, p))
522
if (isVolumePartition(iso9660, p))
524
if (isVDSetTerminator(iso9660, p)) {
531
* ISO 9660 format must have Primary Volume Descriptor and
532
* Volume Descriptor Set Terminator.
534
if (seenTerminator && iso9660->primary.location > 16)
537
/* We didn't find a valid PVD; return a bid of zero. */
542
archive_read_format_iso9660_options(struct archive_read *a,
543
const char *key, const char *val)
545
struct iso9660 *iso9660;
547
iso9660 = (struct iso9660 *)(a->format->data);
549
if (strcmp(key, "joliet") == 0) {
550
if (val == NULL || strcmp(val, "off") == 0 ||
551
strcmp(val, "ignore") == 0 ||
552
strcmp(val, "disable") == 0 ||
553
strcmp(val, "0") == 0)
554
iso9660->opt_support_joliet = 0;
556
iso9660->opt_support_joliet = 1;
559
if (strcmp(key, "rockridge") == 0 ||
560
strcmp(key, "Rockridge") == 0) {
561
iso9660->opt_support_rockridge = val != NULL;
565
/* Note: The "warn" return is just to inform the options
566
* supervisor that we didn't handle it. It will generate
567
* a suitable error if noone used this option. */
568
return (ARCHIVE_WARN);
572
isBootRecord(struct iso9660 *iso9660, const unsigned char *h)
574
(void)iso9660; /* UNUSED */
576
/* Type of the Volume Descriptor Boot Record must be 0. */
580
/* Volume Descriptor Version must be 1. */
588
isVolumePartition(struct iso9660 *iso9660, const unsigned char *h)
592
/* Type of the Volume Partition Descriptor must be 3. */
596
/* Volume Descriptor Version must be 1. */
603
location = archive_le32dec(h + 72);
604
if (location <= SYSTEM_AREA_BLOCK ||
605
location >= iso9660->volume_block)
607
if ((uint32_t)location != archive_be32dec(h + 76))
614
isVDSetTerminator(struct iso9660 *iso9660, const unsigned char *h)
618
(void)iso9660; /* UNUSED */
620
/* Type of the Volume Descriptor Set Terminator must be 255. */
624
/* Volume Descriptor Version must be 1. */
628
/* Reserved field must be 0. */
629
for (i = 7; i < 2048; ++i)
637
isJolietSVD(struct iso9660 *iso9660, const unsigned char *h)
639
const unsigned char *p;
640
ssize_t logical_block_size;
641
int32_t volume_block;
643
/* Check if current sector is a kind of Supplementary Volume
645
if (!isSVD(iso9660, h))
648
/* FIXME: do more validations according to joliet spec. */
650
/* check if this SVD contains joliet extension! */
651
p = h + SVD_escape_sequences_offset;
652
/* N.B. Joliet spec says p[1] == '\\', but.... */
653
if (p[0] == '%' && p[1] == '/') {
658
else if (p[2] == 'C')
660
else if (p[2] == 'E')
662
else /* not joliet */
665
iso9660->seenJoliet = level;
667
} else /* not joliet */
671
archive_le16dec(h + SVD_logical_block_size_offset);
672
volume_block = archive_le32dec(h + SVD_volume_space_size_offset);
674
iso9660->logical_block_size = logical_block_size;
675
iso9660->volume_block = volume_block;
676
iso9660->volume_size = logical_block_size * (uint64_t)volume_block;
677
/* Read Root Directory Record in Volume Descriptor. */
678
p = h + SVD_root_directory_record_offset;
679
iso9660->joliet.location = archive_le32dec(p + DR_extent_offset);
680
iso9660->joliet.size = archive_le32dec(p + DR_size_offset);
686
isSVD(struct iso9660 *iso9660, const unsigned char *h)
688
const unsigned char *p;
689
ssize_t logical_block_size;
690
int32_t volume_block;
694
(void)iso9660; /* UNUSED */
696
/* Type 2 means it's a SVD. */
697
if (h[SVD_type_offset] != 2)
700
/* Reserved field must be 0. */
701
for (i = 0; i < SVD_reserved1_size; ++i)
702
if (h[SVD_reserved1_offset + i] != 0)
704
for (i = 0; i < SVD_reserved2_size; ++i)
705
if (h[SVD_reserved2_offset + i] != 0)
707
for (i = 0; i < SVD_reserved3_size; ++i)
708
if (h[SVD_reserved3_offset + i] != 0)
711
/* File structure version must be 1 for ISO9660/ECMA119. */
712
if (h[SVD_file_structure_version_offset] != 1)
716
archive_le16dec(h + SVD_logical_block_size_offset);
717
if (logical_block_size <= 0)
720
volume_block = archive_le32dec(h + SVD_volume_space_size_offset);
721
if (volume_block <= SYSTEM_AREA_BLOCK+4)
724
/* Location of Occurrence of Type L Path Table must be
725
* available location,
726
* >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
727
location = archive_le32dec(h+SVD_type_L_path_table_offset);
728
if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block)
731
/* The Type M Path Table must be at a valid location (WinISO
732
* and probably other programs omit this, so we allow zero)
734
* >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
735
location = archive_be32dec(h+SVD_type_M_path_table_offset);
736
if ((location > 0 && location < SYSTEM_AREA_BLOCK+2)
737
|| location >= volume_block)
740
/* Read Root Directory Record in Volume Descriptor. */
741
p = h + SVD_root_directory_record_offset;
742
if (p[DR_length_offset] != 34)
749
isEVD(struct iso9660 *iso9660, const unsigned char *h)
751
const unsigned char *p;
752
ssize_t logical_block_size;
753
int32_t volume_block;
757
(void)iso9660; /* UNUSED */
759
/* Type of the Enhanced Volume Descriptor must be 2. */
760
if (h[PVD_type_offset] != 2)
763
/* EVD version must be 2. */
764
if (h[PVD_version_offset] != 2)
767
/* Reserved field must be 0. */
768
if (h[PVD_reserved1_offset] != 0)
771
/* Reserved field must be 0. */
772
for (i = 0; i < PVD_reserved2_size; ++i)
773
if (h[PVD_reserved2_offset + i] != 0)
776
/* Reserved field must be 0. */
777
for (i = 0; i < PVD_reserved3_size; ++i)
778
if (h[PVD_reserved3_offset + i] != 0)
781
/* Logical block size must be > 0. */
782
/* I've looked at Ecma 119 and can't find any stronger
783
* restriction on this field. */
785
archive_le16dec(h + PVD_logical_block_size_offset);
786
if (logical_block_size <= 0)
790
archive_le32dec(h + PVD_volume_space_size_offset);
791
if (volume_block <= SYSTEM_AREA_BLOCK+4)
794
/* File structure version must be 2 for ISO9660:1999. */
795
if (h[PVD_file_structure_version_offset] != 2)
798
/* Location of Occurrence of Type L Path Table must be
799
* available location,
800
* >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
801
location = archive_le32dec(h+PVD_type_1_path_table_offset);
802
if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block)
805
/* Location of Occurrence of Type M Path Table must be
806
* available location,
807
* >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
808
location = archive_be32dec(h+PVD_type_m_path_table_offset);
809
if ((location > 0 && location < SYSTEM_AREA_BLOCK+2)
810
|| location >= volume_block)
813
/* Reserved field must be 0. */
814
for (i = 0; i < PVD_reserved4_size; ++i)
815
if (h[PVD_reserved4_offset + i] != 0)
818
/* Reserved field must be 0. */
819
for (i = 0; i < PVD_reserved5_size; ++i)
820
if (h[PVD_reserved5_offset + i] != 0)
823
/* Read Root Directory Record in Volume Descriptor. */
824
p = h + PVD_root_directory_record_offset;
825
if (p[DR_length_offset] != 34)
832
isPVD(struct iso9660 *iso9660, const unsigned char *h)
834
const unsigned char *p;
835
ssize_t logical_block_size;
836
int32_t volume_block;
840
/* Type of the Primary Volume Descriptor must be 1. */
841
if (h[PVD_type_offset] != 1)
844
/* PVD version must be 1. */
845
if (h[PVD_version_offset] != 1)
848
/* Reserved field must be 0. */
849
if (h[PVD_reserved1_offset] != 0)
852
/* Reserved field must be 0. */
853
for (i = 0; i < PVD_reserved2_size; ++i)
854
if (h[PVD_reserved2_offset + i] != 0)
857
/* Reserved field must be 0. */
858
for (i = 0; i < PVD_reserved3_size; ++i)
859
if (h[PVD_reserved3_offset + i] != 0)
862
/* Logical block size must be > 0. */
863
/* I've looked at Ecma 119 and can't find any stronger
864
* restriction on this field. */
866
archive_le16dec(h + PVD_logical_block_size_offset);
867
if (logical_block_size <= 0)
870
volume_block = archive_le32dec(h + PVD_volume_space_size_offset);
871
if (volume_block <= SYSTEM_AREA_BLOCK+4)
874
/* File structure version must be 1 for ISO9660/ECMA119. */
875
if (h[PVD_file_structure_version_offset] != 1)
878
/* Location of Occurrence of Type L Path Table must be
879
* available location,
880
* > SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
881
location = archive_le32dec(h+PVD_type_1_path_table_offset);
882
if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block)
885
/* The Type M Path Table must also be at a valid location
886
* (although ECMA 119 requires a Type M Path Table, WinISO and
887
* probably other programs omit it, so we permit a zero here)
889
* >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
890
location = archive_be32dec(h+PVD_type_m_path_table_offset);
891
if ((location > 0 && location < SYSTEM_AREA_BLOCK+2)
892
|| location >= volume_block)
895
/* Reserved field must be 0. */
896
for (i = 0; i < PVD_reserved4_size; ++i)
897
if (h[PVD_reserved4_offset + i] != 0)
900
/* Reserved field must be 0. */
901
for (i = 0; i < PVD_reserved5_size; ++i)
902
if (h[PVD_reserved5_offset + i] != 0)
905
/* XXX TODO: Check other values for sanity; reject more
906
* malformed PVDs. XXX */
908
/* Read Root Directory Record in Volume Descriptor. */
909
p = h + PVD_root_directory_record_offset;
910
if (p[DR_length_offset] != 34)
913
iso9660->logical_block_size = logical_block_size;
914
iso9660->volume_block = volume_block;
915
iso9660->volume_size = logical_block_size * (uint64_t)volume_block;
916
iso9660->primary.location = archive_le32dec(p + DR_extent_offset);
917
iso9660->primary.size = archive_le32dec(p + DR_size_offset);
923
read_children(struct archive_read *a, struct file_info *parent)
925
struct iso9660 *iso9660;
926
const unsigned char *b, *p;
927
struct file_info *multi;
930
iso9660 = (struct iso9660 *)(a->format->data);
931
if (iso9660->current_position > parent->offset) {
932
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
933
"Ignoring out-of-order directory (%s) %jd > %jd",
935
(intmax_t)iso9660->current_position,
936
(intmax_t)parent->offset);
937
return (ARCHIVE_WARN);
939
if (parent->offset + parent->size > iso9660->volume_size) {
940
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
941
"Directory is beyond end-of-media: %s",
943
return (ARCHIVE_WARN);
945
if (iso9660->current_position < parent->offset) {
948
skipsize = parent->offset - iso9660->current_position;
949
skipsize = __archive_read_skip(a, skipsize);
951
return ((int)skipsize);
952
iso9660->current_position = parent->offset;
955
step = ((parent->size + iso9660->logical_block_size -1) /
956
iso9660->logical_block_size) * iso9660->logical_block_size;
957
b = __archive_read_ahead(a, step, NULL);
959
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
960
"Failed to read full block when scanning "
961
"ISO9660 directory list");
962
return (ARCHIVE_FATAL);
964
__archive_read_consume(a, step);
965
iso9660->current_position += step;
969
b += iso9660->logical_block_size;
970
step -= iso9660->logical_block_size;
971
for (; *p != 0 && p < b && p + *p <= b; p += *p) {
972
struct file_info *child;
974
/* N.B.: these special directory identifiers
975
* are 8 bit "values" even on a
976
* Joliet CD with UCS-2 (16bit) encoding.
979
/* Skip '.' entry. */
980
if (*(p + DR_name_len_offset) == 1
981
&& *(p + DR_name_offset) == '\0')
983
/* Skip '..' entry. */
984
if (*(p + DR_name_len_offset) == 1
985
&& *(p + DR_name_offset) == '\001')
987
child = parse_file_info(a, parent, p);
989
return (ARCHIVE_FATAL);
990
if (child->cl_offset == 0 &&
991
(child->multi_extent || multi != NULL)) {
996
multi->contents.first = NULL;
997
multi->contents.last =
998
&(multi->contents.first);
1000
con = malloc(sizeof(struct content));
1003
&a->archive, ENOMEM,
1006
return (ARCHIVE_FATAL);
1008
con->offset = child->offset;
1009
con->size = child->size;
1011
*multi->contents.last = con;
1012
multi->contents.last = &(con->next);
1014
add_entry(iso9660, child);
1016
multi->size += child->size;
1017
if (!child->multi_extent)
1021
add_entry(iso9660, child);
1025
/* Read data which recorded by RRIP "CE" extension. */
1026
if (read_CE(a, iso9660) != ARCHIVE_OK)
1027
return (ARCHIVE_FATAL);
1029
return (ARCHIVE_OK);
1033
archive_read_format_iso9660_read_header(struct archive_read *a,
1034
struct archive_entry *entry)
1036
struct iso9660 *iso9660;
1037
struct file_info *file;
1038
int r, rd_r = ARCHIVE_OK;
1040
iso9660 = (struct iso9660 *)(a->format->data);
1042
if (!a->archive.archive_format) {
1043
a->archive.archive_format = ARCHIVE_FORMAT_ISO9660;
1044
a->archive.archive_format_name = "ISO9660";
1047
if (iso9660->current_position == 0) {
1053
vd = &(iso9660->primary);
1054
if (!iso9660->opt_support_joliet)
1055
iso9660->seenJoliet = 0;
1056
if (iso9660->seenJoliet &&
1057
vd->location > iso9660->joliet.location)
1058
/* This condition is unlikely; by way of caution. */
1059
vd = &(iso9660->joliet);
1061
skipsize = LOGICAL_BLOCK_SIZE * vd->location;
1062
skipsize = __archive_read_skip(a, skipsize);
1064
return ((int)skipsize);
1065
iso9660->current_position = skipsize;
1067
block = __archive_read_ahead(a, vd->size, NULL);
1068
if (block == NULL) {
1069
archive_set_error(&a->archive,
1071
"Failed to read full block when scanning "
1072
"ISO9660 directory list");
1073
return (ARCHIVE_FATAL);
1077
* While reading Root Directory, flag seenJoliet
1078
* must be zero to avoid converting special name
1079
* 0x00(Current Directory) and next byte to UCS2.
1081
seenJoliet = iso9660->seenJoliet;/* Save flag. */
1082
iso9660->seenJoliet = 0;
1083
file = parse_file_info(a, NULL, block);
1085
return (ARCHIVE_FATAL);
1086
iso9660->seenJoliet = seenJoliet;
1087
if (vd == &(iso9660->primary) && iso9660->seenRockridge
1088
&& iso9660->seenJoliet)
1090
* If iso image has RockRidge and Joliet,
1091
* we use RockRidge Extensions.
1093
iso9660->seenJoliet = 0;
1094
if (vd == &(iso9660->primary) && !iso9660->seenRockridge
1095
&& iso9660->seenJoliet) {
1096
/* Switch reading data from primary to joliet. */
1097
vd = &(iso9660->joliet);
1098
skipsize = LOGICAL_BLOCK_SIZE * vd->location;
1099
skipsize -= iso9660->current_position;
1100
skipsize = __archive_read_skip(a, skipsize);
1102
return ((int)skipsize);
1103
iso9660->current_position += skipsize;
1105
block = __archive_read_ahead(a, vd->size, NULL);
1106
if (block == NULL) {
1107
archive_set_error(&a->archive,
1109
"Failed to read full block when scanning "
1110
"ISO9660 directory list");
1111
return (ARCHIVE_FATAL);
1113
seenJoliet = iso9660->seenJoliet;/* Save flag. */
1114
iso9660->seenJoliet = 0;
1115
file = parse_file_info(a, NULL, block);
1117
return (ARCHIVE_FATAL);
1118
iso9660->seenJoliet = seenJoliet;
1120
/* Store the root directory in the pending list. */
1121
add_entry(iso9660, file);
1122
if (iso9660->seenRockridge) {
1123
a->archive.archive_format =
1124
ARCHIVE_FORMAT_ISO9660_ROCKRIDGE;
1125
a->archive.archive_format_name =
1126
"ISO9660 with Rockridge extensions";
1130
/* Get the next entry that appears after the current offset. */
1131
r = next_entry_seek(a, iso9660, &file);
1132
if (r != ARCHIVE_OK)
1135
iso9660->entry_bytes_remaining = file->size;
1136
iso9660->entry_sparse_offset = 0; /* Offset for sparse-file-aware clients. */
1138
if (file->offset + file->size > iso9660->volume_size) {
1139
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1140
"File is beyond end-of-media: %s", file->name.s);
1141
iso9660->entry_bytes_remaining = 0;
1142
iso9660->entry_sparse_offset = 0;
1143
return (ARCHIVE_WARN);
1146
/* Set up the entry structure with information about this entry. */
1147
archive_entry_set_mode(entry, file->mode);
1148
archive_entry_set_uid(entry, file->uid);
1149
archive_entry_set_gid(entry, file->gid);
1150
archive_entry_set_nlink(entry, file->nlinks);
1151
if (file->birthtime_is_set)
1152
archive_entry_set_birthtime(entry, file->birthtime, 0);
1154
archive_entry_unset_birthtime(entry);
1155
archive_entry_set_mtime(entry, file->mtime, 0);
1156
archive_entry_set_ctime(entry, file->ctime, 0);
1157
archive_entry_set_atime(entry, file->atime, 0);
1158
/* N.B.: Rock Ridge supports 64-bit device numbers. */
1159
archive_entry_set_rdev(entry, (dev_t)file->rdev);
1160
archive_entry_set_size(entry, iso9660->entry_bytes_remaining);
1161
archive_string_empty(&iso9660->pathname);
1162
archive_entry_set_pathname(entry,
1163
build_pathname(&iso9660->pathname, file));
1164
if (file->symlink.s != NULL)
1165
archive_entry_copy_symlink(entry, file->symlink.s);
1167
/* Note: If the input isn't seekable, we can't rewind to
1168
* return the same body again, so if the next entry refers to
1169
* the same data, we have to return it as a hardlink to the
1170
* original entry. */
1171
if (file->number != -1 &&
1172
file->number == iso9660->previous_number) {
1173
archive_entry_set_hardlink(entry,
1174
iso9660->previous_pathname.s);
1175
archive_entry_unset_size(entry);
1176
iso9660->entry_bytes_remaining = 0;
1177
iso9660->entry_sparse_offset = 0;
1178
return (ARCHIVE_OK);
1181
/* Except for the hardlink case above, if the offset of the
1182
* next entry is before our current position, we can't seek
1183
* backwards to extract it, so issue a warning. Note that
1184
* this can only happen if this entry was added to the heap
1185
* after we passed this offset, that is, only if the directory
1186
* mentioning this entry is later than the body of the entry.
1187
* Such layouts are very unusual; most ISO9660 writers lay out
1188
* and record all directory information first, then store
1189
* all file bodies. */
1190
/* TODO: Someday, libarchive's I/O core will support optional
1191
* seeking. When that day comes, this code should attempt to
1192
* seek and only return the error if the seek fails. That
1193
* will give us support for whacky ISO images that require
1194
* seeking while retaining the ability to read almost all ISO
1195
* images in a streaming fashion. */
1196
if ((file->mode & AE_IFMT) != AE_IFDIR &&
1197
file->offset < iso9660->current_position) {
1198
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1199
"Ignoring out-of-order file (%s) %jd < %jd",
1200
iso9660->pathname.s,
1201
(intmax_t)file->offset,
1202
(intmax_t)iso9660->current_position);
1203
iso9660->entry_bytes_remaining = 0;
1204
iso9660->entry_sparse_offset = 0;
1205
return (ARCHIVE_WARN);
1208
/* Initialize zisofs variables. */
1209
iso9660->entry_zisofs.pz = file->pz;
1212
struct zisofs *zisofs;
1214
zisofs = &iso9660->entry_zisofs;
1215
zisofs->initialized = 0;
1216
zisofs->pz_log2_bs = file->pz_log2_bs;
1217
zisofs->pz_uncompressed_size = file->pz_uncompressed_size;
1218
zisofs->pz_offset = 0;
1219
zisofs->header_avail = 0;
1220
zisofs->header_passed = 0;
1221
zisofs->block_pointers_avail = 0;
1223
archive_entry_set_size(entry, file->pz_uncompressed_size);
1226
iso9660->previous_number = file->number;
1227
archive_strcpy(&iso9660->previous_pathname, iso9660->pathname.s);
1229
/* Reset entry_bytes_remaining if the file is multi extent. */
1230
iso9660->entry_content = file->contents.first;
1231
if (iso9660->entry_content != NULL)
1232
iso9660->entry_bytes_remaining = iso9660->entry_content->size;
1234
if (archive_entry_filetype(entry) == AE_IFDIR) {
1235
/* Overwrite nlinks by proper link number which is
1236
* calculated from number of sub directories. */
1237
archive_entry_set_nlink(entry, 2 + file->subdirs);
1238
/* Directory data has been read completely. */
1239
iso9660->entry_bytes_remaining = 0;
1240
iso9660->entry_sparse_offset = 0;
1243
if (rd_r != ARCHIVE_OK)
1245
return (ARCHIVE_OK);
1249
archive_read_format_iso9660_read_data_skip(struct archive_read *a)
1251
/* Because read_next_header always does an explicit skip
1252
* to the next entry, we don't need to do anything here. */
1253
(void)a; /* UNUSED */
1254
return (ARCHIVE_OK);
1260
zisofs_read_data(struct archive_read *a,
1261
const void **buff, size_t *size, off_t *offset)
1263
struct iso9660 *iso9660;
1264
struct zisofs *zisofs;
1265
const unsigned char *p;
1268
size_t uncompressed_size;
1271
iso9660 = (struct iso9660 *)(a->format->data);
1272
zisofs = &iso9660->entry_zisofs;
1274
p = __archive_read_ahead(a, 1, &bytes_read);
1275
if (bytes_read <= 0) {
1276
archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1277
"Truncated zisofs file body");
1278
return (ARCHIVE_FATAL);
1280
if (bytes_read > iso9660->entry_bytes_remaining)
1281
bytes_read = iso9660->entry_bytes_remaining;
1283
uncompressed_size = 0;
1285
if (!zisofs->initialized) {
1288
/* Allocate block pointers buffer. */
1289
ceil = (zisofs->pz_uncompressed_size +
1290
(1LL << zisofs->pz_log2_bs) - 1)
1291
>> zisofs->pz_log2_bs;
1292
xsize = (ceil + 1) * 4;
1293
if (zisofs->block_pointers_alloc < xsize) {
1296
if (zisofs->block_pointers != NULL)
1297
free(zisofs->block_pointers);
1298
alloc = ((xsize >> 10) + 1) << 10;
1299
zisofs->block_pointers = malloc(alloc);
1300
if (zisofs->block_pointers == NULL) {
1301
archive_set_error(&a->archive, ENOMEM,
1302
"No memory for zisofs decompression");
1303
return (ARCHIVE_FATAL);
1305
zisofs->block_pointers_alloc = alloc;
1307
zisofs->block_pointers_size = xsize;
1309
/* Allocate uncompressed data buffer. */
1310
xsize = 1UL << zisofs->pz_log2_bs;
1311
if (zisofs->uncompressed_buffer_size < xsize) {
1312
if (zisofs->uncompressed_buffer != NULL)
1313
free(zisofs->uncompressed_buffer);
1314
zisofs->uncompressed_buffer = malloc(xsize);
1315
if (zisofs->uncompressed_buffer == NULL) {
1316
archive_set_error(&a->archive, ENOMEM,
1317
"No memory for zisofs decompression");
1318
return (ARCHIVE_FATAL);
1321
zisofs->uncompressed_buffer_size = xsize;
1324
* Read the file header, and check the magic code of zisofs.
1326
if (zisofs->header_avail < sizeof(zisofs->header)) {
1327
xsize = sizeof(zisofs->header) - zisofs->header_avail;
1330
memcpy(zisofs->header + zisofs->header_avail, p, xsize);
1331
zisofs->header_avail += xsize;
1335
if (!zisofs->header_passed &&
1336
zisofs->header_avail == sizeof(zisofs->header)) {
1339
if (memcmp(zisofs->header, zisofs_magic,
1340
sizeof(zisofs_magic)) != 0)
1342
if (archive_le32dec(zisofs->header + 8)
1343
!= zisofs->pz_uncompressed_size)
1345
if (zisofs->header[12] != 4)
1347
if (zisofs->header[13] != zisofs->pz_log2_bs)
1350
archive_set_error(&a->archive,
1351
ARCHIVE_ERRNO_FILE_FORMAT,
1352
"Illegal zisofs file body");
1353
return (ARCHIVE_FATAL);
1355
zisofs->header_passed = 1;
1358
* Read block pointers.
1360
if (zisofs->header_passed &&
1361
zisofs->block_pointers_avail < zisofs->block_pointers_size) {
1362
xsize = zisofs->block_pointers_size
1363
- zisofs->block_pointers_avail;
1366
memcpy(zisofs->block_pointers
1367
+ zisofs->block_pointers_avail, p, xsize);
1368
zisofs->block_pointers_avail += xsize;
1371
if (zisofs->block_pointers_avail
1372
== zisofs->block_pointers_size) {
1373
/* We've got all block pointers and initialize
1374
* related variables. */
1375
zisofs->block_off = 0;
1376
zisofs->block_avail = 0;
1377
/* Complete a initialization */
1378
zisofs->initialized = 1;
1382
if (!zisofs->initialized)
1383
goto next_data; /* We need more datas. */
1387
* Get block offsets from block pointers.
1389
if (zisofs->block_avail == 0) {
1392
if (zisofs->block_off + 4 >= zisofs->block_pointers_size) {
1393
/* There isn't a pair of offsets. */
1394
archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1395
"Illegal zisofs block pointers");
1396
return (ARCHIVE_FATAL);
1398
bst = archive_le32dec(zisofs->block_pointers + zisofs->block_off);
1399
if (bst != zisofs->pz_offset + (bytes_read - avail)) {
1400
/* TODO: Should we seek offset of current file by bst ? */
1401
archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1402
"Illegal zisofs block pointers(cannot seek)");
1403
return (ARCHIVE_FATAL);
1405
bed = archive_le32dec(
1406
zisofs->block_pointers + zisofs->block_off + 4);
1408
archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1409
"Illegal zisofs block pointers");
1410
return (ARCHIVE_FATAL);
1412
zisofs->block_avail = bed - bst;
1413
zisofs->block_off += 4;
1415
/* Initialize compression library for new block. */
1416
if (zisofs->stream_valid)
1417
r = inflateReset(&zisofs->stream);
1419
r = inflateInit(&zisofs->stream);
1421
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1422
"Can't initialize zisofs decompression.");
1423
return (ARCHIVE_FATAL);
1425
zisofs->stream_valid = 1;
1426
zisofs->stream.total_in = 0;
1427
zisofs->stream.total_out = 0;
1431
* Make uncompressed datas.
1433
if (zisofs->block_avail == 0) {
1434
memset(zisofs->uncompressed_buffer, 0,
1435
zisofs->uncompressed_buffer_size);
1436
uncompressed_size = zisofs->uncompressed_buffer_size;
1438
zisofs->stream.next_in = (Bytef *)(uintptr_t)(const void *)p;
1439
if (avail > zisofs->block_avail)
1440
zisofs->stream.avail_in = zisofs->block_avail;
1442
zisofs->stream.avail_in = avail;
1443
zisofs->stream.next_out = zisofs->uncompressed_buffer;
1444
zisofs->stream.avail_out = zisofs->uncompressed_buffer_size;
1446
r = inflate(&zisofs->stream, 0);
1448
case Z_OK: /* Decompressor made some progress.*/
1449
case Z_STREAM_END: /* Found end of stream. */
1452
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1453
"zisofs decompression failed (%d)", r);
1454
return (ARCHIVE_FATAL);
1457
zisofs->uncompressed_buffer_size - zisofs->stream.avail_out;
1458
avail -= zisofs->stream.next_in - p;
1459
zisofs->block_avail -= zisofs->stream.next_in - p;
1462
bytes_read -= avail;
1463
*buff = zisofs->uncompressed_buffer;
1464
*size = uncompressed_size;
1465
*offset = iso9660->entry_sparse_offset;
1466
iso9660->entry_sparse_offset += uncompressed_size;
1467
iso9660->entry_bytes_remaining -= bytes_read;
1468
iso9660->current_position += bytes_read;
1469
zisofs->pz_offset += bytes_read;
1470
__archive_read_consume(a, bytes_read);
1472
return (ARCHIVE_OK);
1475
#else /* HAVE_ZLIB_H */
1478
zisofs_read_data(struct archive_read *a,
1479
const void **buff, size_t *size, off_t *offset)
1482
(void)buff;/* UNUSED */
1483
(void)size;/* UNUSED */
1484
(void)offset;/* UNUSED */
1485
archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1486
"zisofs is not supported on this platform.");
1487
return (ARCHIVE_FAILED);
1490
#endif /* HAVE_ZLIB_H */
1493
archive_read_format_iso9660_read_data(struct archive_read *a,
1494
const void **buff, size_t *size, off_t *offset)
1497
struct iso9660 *iso9660;
1499
iso9660 = (struct iso9660 *)(a->format->data);
1500
if (iso9660->entry_bytes_remaining <= 0) {
1501
if (iso9660->entry_content != NULL)
1502
iso9660->entry_content = iso9660->entry_content->next;
1503
if (iso9660->entry_content == NULL) {
1506
*offset = iso9660->entry_sparse_offset;
1507
return (ARCHIVE_EOF);
1509
/* Seek forward to the start of the entry. */
1510
if (iso9660->current_position < iso9660->entry_content->offset) {
1513
step = iso9660->entry_content->offset -
1514
iso9660->current_position;
1515
step = __archive_read_skip(a, step);
1518
iso9660->current_position =
1519
iso9660->entry_content->offset;
1521
if (iso9660->entry_content->offset < iso9660->current_position) {
1522
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1523
"Ignoring out-of-order file (%s) %jd < %jd",
1524
iso9660->pathname.s,
1525
(intmax_t)iso9660->entry_content->offset,
1526
(intmax_t)iso9660->current_position);
1529
*offset = iso9660->entry_sparse_offset;
1530
return (ARCHIVE_WARN);
1532
iso9660->entry_bytes_remaining = iso9660->entry_content->size;
1534
if (iso9660->entry_zisofs.pz)
1535
return (zisofs_read_data(a, buff, size, offset));
1537
*buff = __archive_read_ahead(a, 1, &bytes_read);
1538
if (bytes_read == 0)
1539
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1540
"Truncated input file");
1542
return (ARCHIVE_FATAL);
1543
if (bytes_read > iso9660->entry_bytes_remaining)
1544
bytes_read = iso9660->entry_bytes_remaining;
1546
*offset = iso9660->entry_sparse_offset;
1547
iso9660->entry_sparse_offset += bytes_read;
1548
iso9660->entry_bytes_remaining -= bytes_read;
1549
iso9660->current_position += bytes_read;
1550
__archive_read_consume(a, bytes_read);
1551
return (ARCHIVE_OK);
1555
archive_read_format_iso9660_cleanup(struct archive_read *a)
1557
struct iso9660 *iso9660;
1560
iso9660 = (struct iso9660 *)(a->format->data);
1561
release_files(iso9660);
1562
free(iso9660->read_ce_req.reqs);
1563
archive_string_free(&iso9660->pathname);
1564
archive_string_free(&iso9660->previous_pathname);
1565
if (iso9660->pending_files.files)
1566
free(iso9660->pending_files.files);
1568
free(iso9660->entry_zisofs.uncompressed_buffer);
1569
free(iso9660->entry_zisofs.block_pointers);
1570
if (iso9660->entry_zisofs.stream_valid) {
1571
if (inflateEnd(&iso9660->entry_zisofs.stream) != Z_OK) {
1572
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1573
"Failed to clean up zlib decompressor");
1579
(a->format->data) = NULL;
1584
* This routine parses a single ISO directory record, makes sense
1585
* of any extensions, and stores the result in memory.
1587
static struct file_info *
1588
parse_file_info(struct archive_read *a, struct file_info *parent,
1589
const unsigned char *isodirrec)
1591
struct iso9660 *iso9660;
1592
struct file_info *file;
1594
const unsigned char *rr_start, *rr_end;
1595
const unsigned char *p;
1601
iso9660 = (struct iso9660 *)(a->format->data);
1603
dr_len = (size_t)isodirrec[DR_length_offset];
1604
name_len = (size_t)isodirrec[DR_name_len_offset];
1605
location = archive_le32dec(isodirrec + DR_extent_offset);
1606
fsize = toi(isodirrec + DR_size_offset, DR_size_size);
1607
/* Sanity check that dr_len needs at least 34. */
1609
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1610
"Invalid length of directory record");
1613
/* Sanity check that name_len doesn't exceed dr_len. */
1614
if (dr_len - 33 < name_len || name_len == 0) {
1615
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1616
"Invalid length of file identifier");
1619
/* Sanity check that location doesn't exceed volume block.
1620
* Don't check lower limit of location; it's possibility
1621
* the location has negative value when file type is symbolic
1622
* link or file size is zero. As far as I know latest mkisofs
1626
(location + ((fsize + iso9660->logical_block_size -1)
1627
/ iso9660->logical_block_size)) > iso9660->volume_block) {
1628
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1629
"Invalid location of extent of file");
1633
/* Create a new file entry and copy data from the ISO dir record. */
1634
file = (struct file_info *)malloc(sizeof(*file));
1636
archive_set_error(&a->archive, ENOMEM,
1637
"No memory for file entry");
1640
memset(file, 0, sizeof(*file));
1641
file->parent = parent;
1642
file->offset = iso9660->logical_block_size * (uint64_t)location;
1644
file->mtime = isodate7(isodirrec + DR_date_offset);
1645
file->ctime = file->atime = file->mtime;
1646
file->rede_files.first = NULL;
1647
file->rede_files.last = &(file->rede_files.first);
1649
p = isodirrec + DR_name_offset;
1650
/* Rockridge extensions (if any) follow name. Compute this
1651
* before fidgeting the name_len below. */
1652
rr_start = p + name_len + (name_len & 1 ? 0 : 1);
1653
rr_end = isodirrec + dr_len;
1655
if (iso9660->seenJoliet) {
1656
/* Joliet names are max 64 chars (128 bytes) according to spec,
1657
* but genisoimage/mkisofs allows recording longer Joliet
1658
* names which are 103 UCS2 characters(206 bytes) by their
1659
* option '-joliet-long'.
1661
wchar_t wbuff[103+1], *wp;
1662
const unsigned char *c;
1666
/* convert BE UTF-16 to wchar_t */
1667
for (c = p, wp = wbuff;
1668
c < (p + name_len) &&
1669
wp < (wbuff + sizeof(wbuff)/sizeof(*wbuff) - 1);
1671
*wp++ = (((255 & (int)c[0]) << 8) | (255 & (int)c[1]));
1675
/* trim trailing first version and dot from filename.
1677
* Remember we where in UTF-16BE land!
1678
* SEPARATOR 1 (.) and SEPARATOR 2 (;) are both
1679
* 16 bits big endian characters on Joliet.
1681
* TODO: sanitize filename?
1682
* Joliet allows any UCS-2 char except:
1683
* *, /, :, ;, ? and \.
1685
/* Chop off trailing ';1' from files. */
1686
if (*(wp-2) == ';' && *(wp-1) == '1') {
1691
/* Chop off trailing '.' from filenames. */
1695
/* store the result in the file name field. */
1696
archive_strappend_w_utf8(&file->name, wbuff);
1698
/* Chop off trailing ';1' from files. */
1699
if (name_len > 2 && p[name_len - 2] == ';' &&
1700
p[name_len - 1] == '1')
1702
/* Chop off trailing '.' from filenames. */
1703
if (name_len > 1 && p[name_len - 1] == '.')
1706
archive_strncpy(&file->name, (const char *)p, name_len);
1709
flags = isodirrec[DR_flags_offset];
1711
file->mode = AE_IFDIR | 0700;
1713
file->mode = AE_IFREG | 0400;
1715
file->multi_extent = 1;
1717
file->multi_extent = 0;
1719
* Use location for file number.
1720
* File number is treated as inode number to find out harlink
1721
* target. If Rockridge extensions is being used, file number
1722
* will be overwritten by FILE SERIAL NUMBER of RRIP "PX"
1724
* NOTE: Old mkisofs did not record that FILE SERIAL NUMBER
1727
if (file->size == 0 && location >= 0)
1728
/* If file->size is zero, its location points wrong place.
1729
* Dot not use it for file number.
1730
* When location has negative value, it can be used
1735
file->number = (int64_t)(uint32_t)location;
1737
/* Rockridge extensions overwrite information from above. */
1738
if (iso9660->opt_support_rockridge) {
1739
if (parent == NULL && rr_end - rr_start >= 7) {
1741
if (p[0] == 'S' && p[1] == 'P'
1742
&& p[2] == 7 && p[3] == 1
1743
&& p[4] == 0xBE && p[5] == 0xEF) {
1745
* SP extension stores the suspOffset
1746
* (Number of bytes to skip between
1747
* filename and SUSP records.)
1748
* It is mandatory by the SUSP standard
1751
* It allows SUSP to coexist with
1752
* non-SUSP uses of the System
1753
* Use Area by placing non-SUSP data
1756
* SP extension must be in the root
1757
* directory entry, disable all SUSP
1758
* processing if not found.
1760
iso9660->suspOffset = p[6];
1761
iso9660->seenSUSP = 1;
1765
if (iso9660->seenSUSP) {
1768
file->name_continues = 0;
1769
file->symlink_continues = 0;
1770
rr_start += iso9660->suspOffset;
1771
r = parse_rockridge(a, file, rr_start, rr_end);
1772
if (r != ARCHIVE_OK) {
1777
/* If there isn't SUSP, disable parsing
1778
* rock ridge extensions. */
1779
iso9660->opt_support_rockridge = 0;
1782
file->nlinks = 1;/* Reset nlink. we'll calculate it later. */
1783
/* Tell file's parent how many children that parent has. */
1784
if (parent != NULL && (flags & 0x02))
1787
if (iso9660->seenRockridge) {
1788
if (parent != NULL && parent->parent == NULL &&
1789
(flags & 0x02) && iso9660->rr_moved == NULL &&
1790
(strcmp(file->name.s, "rr_moved") == 0 ||
1791
strcmp(file->name.s, ".rr_moved") == 0)) {
1792
iso9660->rr_moved = file;
1794
file->rr_moved_has_re_only = 1;
1797
} else if (file->re) {
1798
/* This file's parent is not rr_moved, clear invalid
1800
if (parent == NULL || parent->rr_moved == 0)
1802
else if ((flags & 0x02) == 0) {
1803
file->rr_moved_has_re_only = 0;
1806
} else if (parent != NULL && parent->rr_moved)
1807
file->rr_moved_has_re_only = 0;
1808
else if (parent != NULL && (flags & 0x02) &&
1809
(parent->re || parent->re_descendant))
1810
file->re_descendant = 1;
1811
if (file->cl_offset != 0) {
1813
/* Overwrite an offset and a number of this "CL" entry
1814
* to appear before other dirs. "+1" to those is to
1815
* make sure to appear after "RE" entry which this
1816
* "CL" entry should be connected with. */
1817
file->offset = file->number = file->cl_offset + 1;
1822
/* DEBUGGING: Warn about attributes I don't yet fully support. */
1823
if ((flags & ~0x02) != 0) {
1824
fprintf(stderr, "\n ** Unrecognized flag: ");
1825
dump_isodirrec(stderr, isodirrec);
1826
fprintf(stderr, "\n");
1827
} else if (toi(isodirrec + DR_volume_sequence_number_offset, 2) != 1) {
1828
fprintf(stderr, "\n ** Unrecognized sequence number: ");
1829
dump_isodirrec(stderr, isodirrec);
1830
fprintf(stderr, "\n");
1831
} else if (*(isodirrec + DR_file_unit_size_offset) != 0) {
1832
fprintf(stderr, "\n ** Unexpected file unit size: ");
1833
dump_isodirrec(stderr, isodirrec);
1834
fprintf(stderr, "\n");
1835
} else if (*(isodirrec + DR_interleave_offset) != 0) {
1836
fprintf(stderr, "\n ** Unexpected interleave: ");
1837
dump_isodirrec(stderr, isodirrec);
1838
fprintf(stderr, "\n");
1839
} else if (*(isodirrec + DR_ext_attr_length_offset) != 0) {
1840
fprintf(stderr, "\n ** Unexpected extended attribute length: ");
1841
dump_isodirrec(stderr, isodirrec);
1842
fprintf(stderr, "\n");
1845
register_file(iso9660, file);
1850
parse_rockridge(struct archive_read *a, struct file_info *file,
1851
const unsigned char *p, const unsigned char *end)
1853
struct iso9660 *iso9660;
1855
iso9660 = (struct iso9660 *)(a->format->data);
1857
while (p + 4 <= end /* Enough space for another entry. */
1858
&& p[0] >= 'A' && p[0] <= 'Z' /* Sanity-check 1st char of name. */
1859
&& p[1] >= 'A' && p[1] <= 'Z' /* Sanity-check 2nd char of name. */
1860
&& p[2] >= 4 /* Sanity-check length. */
1861
&& p + p[2] <= end) { /* Sanity-check length. */
1862
const unsigned char *data = p + 4;
1863
int data_length = p[2] - 4;
1867
* Yes, each 'if' here does test p[0] again.
1868
* Otherwise, the fall-through handling to catch
1869
* unsupported extensions doesn't work.
1873
if (p[0] == 'C' && p[1] == 'E') {
1874
if (version == 1 && data_length == 24) {
1876
* CE extension comprises:
1877
* 8 byte sector containing extension
1878
* 8 byte offset w/in above sector
1879
* 8 byte length of continuation
1882
archive_le32dec(data);
1884
archive_le32dec(data+8);
1886
archive_le32dec(data+16);
1887
if (register_CE(a, location, file)
1889
return (ARCHIVE_FATAL);
1893
if (p[0] == 'C' && p[1] == 'L') {
1894
if (version == 1 && data_length == 8) {
1895
file->cl_offset = (uint64_t)
1896
iso9660->logical_block_size *
1897
(uint64_t)archive_le32dec(data);
1898
iso9660->seenRockridge = 1;
1904
if (p[0] == 'N' && p[1] == 'M') {
1906
parse_rockridge_NM1(file,
1908
iso9660->seenRockridge = 1;
1914
if (p[0] == 'P' && p[1] == 'D') {
1916
* PD extension is padding;
1917
* contents are always ignored.
1921
if (p[0] == 'P' && p[1] == 'N') {
1922
if (version == 1 && data_length == 16) {
1923
file->rdev = toi(data,4);
1925
file->rdev |= toi(data + 8, 4);
1926
iso9660->seenRockridge = 1;
1930
if (p[0] == 'P' && p[1] == 'X') {
1932
* PX extension comprises:
1934
* 8 bytes for nlinks,
1937
* 8 bytes for inode.
1940
if (data_length >= 8)
1943
if (data_length >= 16)
1946
if (data_length >= 24)
1948
= toi(data + 16, 4);
1949
if (data_length >= 32)
1951
= toi(data + 24, 4);
1952
if (data_length >= 40)
1954
= toi(data + 32, 4);
1955
iso9660->seenRockridge = 1;
1961
if (p[0] == 'R' && p[1] == 'E' && version == 1) {
1963
iso9660->seenRockridge = 1;
1966
if (p[0] == 'R' && p[1] == 'R' && version == 1) {
1968
* RR extension comprises:
1969
* one byte flag value
1970
* This extension is obsolete,
1971
* so contents are always ignored.
1977
if (p[0] == 'S' && p[1] == 'L') {
1979
parse_rockridge_SL1(file,
1981
iso9660->seenRockridge = 1;
1985
if (p[0] == 'S' && p[1] == 'T'
1986
&& data_length == 0 && version == 1) {
1988
* ST extension marks end of this
1989
* block of SUSP entries.
1991
* It allows SUSP to coexist with
1992
* non-SUSP uses of the System
1993
* Use Area by placing non-SUSP data
1996
iso9660->seenSUSP = 0;
1997
iso9660->seenRockridge = 0;
1998
return (ARCHIVE_OK);
2001
if (p[0] == 'T' && p[1] == 'F') {
2003
parse_rockridge_TF1(file,
2005
iso9660->seenRockridge = 1;
2011
if (p[0] == 'Z' && p[1] == 'F') {
2013
parse_rockridge_ZF1(file,
2019
/* The FALLTHROUGHs above leave us here for
2020
* any unsupported extension. */
2028
return (ARCHIVE_OK);
2032
register_CE(struct archive_read *a, int32_t location,
2033
struct file_info *file)
2035
struct iso9660 *iso9660;
2036
struct read_ce_queue *heap;
2037
struct read_ce_req *p;
2038
uint64_t offset, parent_offset;
2041
iso9660 = (struct iso9660 *)(a->format->data);
2042
offset = ((uint64_t)location) * (uint64_t)iso9660->logical_block_size;
2043
if (((file->mode & AE_IFMT) == AE_IFREG &&
2044
offset >= file->offset) ||
2045
offset < iso9660->current_position) {
2046
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
2047
"Invalid location in SUSP \"CE\" extension");
2048
return (ARCHIVE_FATAL);
2051
/* Expand our CE list as necessary. */
2052
heap = &(iso9660->read_ce_req);
2053
if (heap->cnt >= heap->allocated) {
2056
if (heap->allocated < 16)
2059
new_size = heap->allocated * 2;
2060
/* Overflow might keep us from growing the list. */
2061
if (new_size <= heap->allocated)
2062
__archive_errx(1, "Out of memory");
2063
p = malloc(new_size * sizeof(p[0]));
2065
__archive_errx(1, "Out of memory");
2066
if (heap->reqs != NULL) {
2067
memcpy(p, heap->reqs, heap->cnt * sizeof(*p));
2071
heap->allocated = new_size;
2075
* Start with hole at end, walk it up tree to find insertion point.
2079
parent = (hole - 1)/2;
2080
parent_offset = heap->reqs[parent].offset;
2081
if (offset >= parent_offset) {
2082
heap->reqs[hole].offset = offset;
2083
heap->reqs[hole].file = file;
2084
return (ARCHIVE_OK);
2086
// Move parent into hole <==> move hole up tree.
2087
heap->reqs[hole] = heap->reqs[parent];
2090
heap->reqs[0].offset = offset;
2091
heap->reqs[0].file = file;
2092
return (ARCHIVE_OK);
2096
next_CE(struct read_ce_queue *heap)
2098
uint64_t a_offset, b_offset, c_offset;
2100
struct read_ce_req tmp;
2106
* Move the last item in the heap to the root of the tree
2108
heap->reqs[0] = heap->reqs[--(heap->cnt)];
2111
* Rebalance the heap.
2113
a = 0; // Starting element and its offset
2114
a_offset = heap->reqs[a].offset;
2116
b = a + a + 1; // First child
2119
b_offset = heap->reqs[b].offset;
2120
c = b + 1; // Use second child if it is smaller.
2121
if (c < heap->cnt) {
2122
c_offset = heap->reqs[c].offset;
2123
if (c_offset < b_offset) {
2125
b_offset = c_offset;
2128
if (a_offset <= b_offset)
2130
tmp = heap->reqs[a];
2131
heap->reqs[a] = heap->reqs[b];
2132
heap->reqs[b] = tmp;
2139
read_CE(struct archive_read *a, struct iso9660 *iso9660)
2141
struct read_ce_queue *heap;
2142
const unsigned char *b, *p, *end;
2143
struct file_info *file;
2147
/* Read data which RRIP "CE" extension points. */
2148
heap = &(iso9660->read_ce_req);
2149
step = iso9660->logical_block_size;
2151
heap->reqs[0].offset == iso9660->current_position) {
2152
b = __archive_read_ahead(a, step, NULL);
2154
archive_set_error(&a->archive,
2156
"Failed to read full block when scanning "
2157
"ISO9660 directory list");
2158
return (ARCHIVE_FATAL);
2161
file = heap->reqs[0].file;
2162
p = b + file->ce_offset;
2163
end = p + file->ce_size;
2165
r = parse_rockridge(a, file, p, end);
2166
if (r != ARCHIVE_OK)
2167
return (ARCHIVE_FATAL);
2168
} while (heap->cnt &&
2169
heap->reqs[0].offset == iso9660->current_position);
2170
/* NOTE: Do not move this consume's code to fron of
2171
* do-while loop. Registration of nested CE extension
2172
* might cause error because of current position. */
2173
__archive_read_consume(a, step);
2174
iso9660->current_position += step;
2176
return (ARCHIVE_OK);
2180
parse_rockridge_NM1(struct file_info *file,
2181
const unsigned char *data, int data_length)
2183
if (!file->name_continues)
2184
archive_string_empty(&file->name);
2185
file->name_continues = 0;
2186
if (data_length < 1)
2189
* NM version 1 extension comprises:
2190
* 1 byte flag, value is one of:
2191
* = 0: remainder is name
2192
* = 1: remainder is name, next NM entry continues name
2195
* = 32: Implementation specific
2196
* All other values are reserved.
2200
if (data_length < 2)
2202
archive_strncat(&file->name, (const char *)data + 1, data_length - 1);
2205
if (data_length < 2)
2207
archive_strncat(&file->name, (const char *)data + 1, data_length - 1);
2208
file->name_continues = 1;
2211
archive_strcat(&file->name, ".");
2214
archive_strcat(&file->name, "..");
2223
parse_rockridge_TF1(struct file_info *file, const unsigned char *data,
2228
* TF extension comprises:
2230
* create time (optional)
2231
* modify time (optional)
2232
* access time (optional)
2233
* attribute time (optional)
2234
* Time format and presence of fields
2235
* is controlled by flag bits.
2237
if (data_length < 1)
2243
/* Use 17-byte time format. */
2244
if ((flag & 1) && data_length >= 17) {
2246
file->birthtime_is_set = 1;
2247
file->birthtime = isodate17(data);
2251
if ((flag & 2) && data_length >= 17) {
2253
file->mtime = isodate17(data);
2257
if ((flag & 4) && data_length >= 17) {
2259
file->atime = isodate17(data);
2263
if ((flag & 8) && data_length >= 17) {
2264
/* Attribute change time. */
2265
file->ctime = isodate17(data);
2268
/* Use 7-byte time format. */
2269
if ((flag & 1) && data_length >= 7) {
2271
file->birthtime_is_set = 1;
2272
file->birthtime = isodate7(data);
2276
if ((flag & 2) && data_length >= 7) {
2278
file->mtime = isodate7(data);
2282
if ((flag & 4) && data_length >= 7) {
2284
file->atime = isodate7(data);
2288
if ((flag & 8) && data_length >= 7) {
2289
/* Attribute change time. */
2290
file->ctime = isodate7(data);
2296
parse_rockridge_SL1(struct file_info *file, const unsigned char *data,
2299
const char *separator = "";
2301
if (!file->symlink_continues || file->symlink.length < 1)
2302
archive_string_empty(&file->symlink);
2303
else if (!file->symlink_continues &&
2304
file->symlink.s[file->symlink.length - 1] != '/')
2306
file->symlink_continues = 0;
2309
* Defined flag values:
2310
* 0: This is the last SL record for this symbolic link
2311
* 1: this symbolic link field continues in next SL entry
2312
* All other values are reserved.
2314
if (data_length < 1)
2320
file->symlink_continues = 1;
2325
++data; /* Skip flag byte. */
2329
* SL extension body stores "components".
2330
* Basically, this is a complicated way of storing
2331
* a POSIX path. It also interferes with using
2332
* symlinks for storing non-path data. <sigh>
2334
* Each component is 2 bytes (flag and length)
2335
* possibly followed by name data.
2337
while (data_length >= 2) {
2338
unsigned char flag = *data++;
2339
unsigned char nlen = *data++;
2342
archive_strcat(&file->symlink, separator);
2346
case 0: /* Usual case, this is text. */
2347
if (data_length < nlen)
2349
archive_strncat(&file->symlink,
2350
(const char *)data, nlen);
2352
case 0x01: /* Text continues in next component. */
2353
if (data_length < nlen)
2355
archive_strncat(&file->symlink,
2356
(const char *)data, nlen);
2359
case 0x02: /* Current dir. */
2360
archive_strcat(&file->symlink, ".");
2362
case 0x04: /* Parent dir. */
2363
archive_strcat(&file->symlink, "..");
2365
case 0x08: /* Root of filesystem. */
2366
archive_strcat(&file->symlink, "/");
2369
case 0x10: /* Undefined (historically "volume root" */
2370
archive_string_empty(&file->symlink);
2371
archive_strcat(&file->symlink, "ROOT");
2373
case 0x20: /* Undefined (historically "hostname") */
2374
archive_strcat(&file->symlink, "hostname");
2377
/* TODO: issue a warning ? */
2381
data_length -= nlen;
2386
parse_rockridge_ZF1(struct file_info *file, const unsigned char *data,
2390
if (data[0] == 0x70 && data[1] == 0x7a && data_length == 12) {
2393
file->pz_log2_bs = data[3];
2394
file->pz_uncompressed_size = archive_le32dec(&data[4]);
2399
register_file(struct iso9660 *iso9660, struct file_info *file)
2402
file->use_next = iso9660->use_files;
2403
iso9660->use_files = file;
2407
release_files(struct iso9660 *iso9660)
2409
struct content *con, *connext;
2410
struct file_info *file;
2412
file = iso9660->use_files;
2413
while (file != NULL) {
2414
struct file_info *next = file->use_next;
2416
archive_string_free(&file->name);
2417
archive_string_free(&file->symlink);
2418
con = file->contents.first;
2419
while (con != NULL) {
2420
connext = con->next;
2430
next_entry_seek(struct archive_read *a, struct iso9660 *iso9660,
2431
struct file_info **pfile)
2433
struct file_info *file;
2436
r = next_cache_entry(a, iso9660, pfile);
2437
if (r != ARCHIVE_OK)
2441
/* Don't waste time seeking for zero-length bodies. */
2442
if (file->size == 0)
2443
file->offset = iso9660->current_position;
2445
/* Seek forward to the start of the entry. */
2446
if (iso9660->current_position < file->offset) {
2449
step = file->offset - iso9660->current_position;
2450
step = __archive_read_skip(a, step);
2453
iso9660->current_position = file->offset;
2456
/* We found body of file; handle it now. */
2457
return (ARCHIVE_OK);
2461
next_cache_entry(struct archive_read *a, struct iso9660 *iso9660,
2462
struct file_info **pfile)
2464
struct file_info *file;
2466
struct file_info *first;
2467
struct file_info **last;
2472
file = cache_get_entry(iso9660);
2475
return (ARCHIVE_OK);
2479
struct file_info *re, *d;
2481
*pfile = file = next_entry(iso9660);
2484
* If directory entries all which are descendant of
2485
* rr_moved are stil remaning, expose their.
2487
if (iso9660->re_files.first != NULL &&
2488
iso9660->rr_moved != NULL &&
2489
iso9660->rr_moved->rr_moved_has_re_only)
2490
/* Expose "rr_moved" entry. */
2491
cache_add_entry(iso9660, iso9660->rr_moved);
2492
while ((re = re_get_entry(iso9660)) != NULL) {
2493
/* Expose its descendant dirs. */
2494
while ((d = rede_get_entry(re)) != NULL)
2495
cache_add_entry(iso9660, d);
2497
if (iso9660->cache_files.first != NULL)
2498
return (next_cache_entry(a, iso9660, pfile));
2499
return (ARCHIVE_EOF);
2502
if (file->cl_offset) {
2503
struct file_info *first_re = NULL;
2507
* Find "RE" dir for the current file, which
2510
while ((re = re_get_entry(iso9660))
2512
if (first_re == NULL)
2514
if (re->offset == file->cl_offset) {
2515
re->parent->subdirs--;
2516
re->parent = file->parent;
2518
if (re->parent->re_descendant) {
2520
re->re_descendant = 1;
2521
if (rede_add_entry(re) < 0)
2523
/* Move a list of descendants
2524
* to a new ancestor. */
2525
while ((d = rede_get_entry(
2527
if (rede_add_entry(d)
2532
/* Replace the current file
2535
/* Expose its descendant */
2536
while ((d = rede_get_entry(
2542
re_add_entry(iso9660, re);
2546
* Do not expose this at this time
2547
* because we have not gotten its full-path
2552
} else if ((file->mode & AE_IFMT) == AE_IFDIR) {
2555
/* Read file entries in this dir. */
2556
r = read_children(a, file);
2557
if (r != ARCHIVE_OK)
2561
* Handle a special dir of Rockridge extensions,
2564
if (file->rr_moved) {
2566
* If this has only the subdirectories which
2567
* have "RE" flags, do not expose at this time.
2569
if (file->rr_moved_has_re_only)
2571
/* Otherwise expose "rr_moved" entry. */
2572
} else if (file->re) {
2574
* Do not expose this at this time
2575
* because we have not gotten its full-path
2578
re_add_entry(iso9660, file);
2580
} else if (file->re_descendant) {
2582
* If the top level "RE" entry of this entry
2583
* is not exposed, we, accordingly, should not
2584
* expose this entry at this time because
2585
* we cannot make its proper full-path name.
2587
if (rede_add_entry(file) == 0)
2589
/* Otherwise we can expose this entry because
2590
* it seems its top level "RE" has already been
2597
if ((file->mode & AE_IFMT) != AE_IFREG || file->number == -1)
2598
return (ARCHIVE_OK);
2601
number = file->number;
2602
iso9660->cache_files.first = NULL;
2603
iso9660->cache_files.last = &(iso9660->cache_files.first);
2604
empty_files.first = NULL;
2605
empty_files.last = &empty_files.first;
2606
/* Collect files which has the same file serial number.
2607
* Peek pending_files so that file which number is different
2608
* is not put bak. */
2609
while (iso9660->pending_files.used > 0 &&
2610
(iso9660->pending_files.files[0]->number == -1 ||
2611
iso9660->pending_files.files[0]->number == number)) {
2612
if (file->number == -1) {
2613
/* This file has the same offset
2614
* but it's wrong offset which empty files
2615
* and symlink files have.
2616
* NOTE: This wrong offse was recorded by
2617
* old mkisofs utility. If ISO images is
2618
* created by latest mkisofs, this does not
2622
*empty_files.last = file;
2623
empty_files.last = &(file->next);
2626
cache_add_entry(iso9660, file);
2628
file = next_entry(iso9660);
2633
return ((file == NULL)?ARCHIVE_EOF:ARCHIVE_OK);
2635
if (file->number == -1) {
2637
*empty_files.last = file;
2638
empty_files.last = &(file->next);
2641
cache_add_entry(iso9660, file);
2645
/* The count is the same as number of hardlink,
2646
* so much so that each nlinks of files in cache_file
2647
* is overwritten by value of the count.
2649
for (file = iso9660->cache_files.first;
2650
file != NULL; file = file->next)
2651
file->nlinks = count;
2653
/* If there are empty files, that files are added
2654
* to the tail of the cache_files. */
2655
if (empty_files.first != NULL) {
2656
*iso9660->cache_files.last = empty_files.first;
2657
iso9660->cache_files.last = empty_files.last;
2659
*pfile = cache_get_entry(iso9660);
2660
return ((*pfile == NULL)?ARCHIVE_EOF:ARCHIVE_OK);
2663
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
2664
"Failed to connect 'CL' pointer to 'RE' rr_moved pointer of"
2665
"Rockridge extensions");
2666
return (ARCHIVE_FATAL);
2670
re_add_entry(struct iso9660 *iso9660, struct file_info *file)
2672
file->re_next = NULL;
2673
*iso9660->re_files.last = file;
2674
iso9660->re_files.last = &(file->re_next);
2677
static inline struct file_info *
2678
re_get_entry(struct iso9660 *iso9660)
2680
struct file_info *file;
2682
if ((file = iso9660->re_files.first) != NULL) {
2683
iso9660->re_files.first = file->re_next;
2684
if (iso9660->re_files.first == NULL)
2685
iso9660->re_files.last =
2686
&(iso9660->re_files.first);
2692
rede_add_entry(struct file_info *file)
2694
struct file_info *re;
2697
while (re != NULL && !re->re)
2702
file->re_next = NULL;
2703
*re->rede_files.last = file;
2704
re->rede_files.last = &(file->re_next);
2708
static inline struct file_info *
2709
rede_get_entry(struct file_info *re)
2711
struct file_info *file;
2713
if ((file = re->rede_files.first) != NULL) {
2714
re->rede_files.first = file->re_next;
2715
if (re->rede_files.first == NULL)
2716
re->rede_files.last =
2717
&(re->rede_files.first);
2723
cache_add_entry(struct iso9660 *iso9660, struct file_info *file)
2726
*iso9660->cache_files.last = file;
2727
iso9660->cache_files.last = &(file->next);
2730
static inline struct file_info *
2731
cache_get_entry(struct iso9660 *iso9660)
2733
struct file_info *file;
2735
if ((file = iso9660->cache_files.first) != NULL) {
2736
iso9660->cache_files.first = file->next;
2737
if (iso9660->cache_files.first == NULL)
2738
iso9660->cache_files.last = &(iso9660->cache_files.first);
2744
heap_add_entry(struct heap_queue *heap, struct file_info *file, uint64_t key)
2746
uint64_t file_key, parent_key;
2749
/* Expand our pending files list as necessary. */
2750
if (heap->used >= heap->allocated) {
2751
struct file_info **new_pending_files;
2752
int new_size = heap->allocated * 2;
2754
if (heap->allocated < 1024)
2756
/* Overflow might keep us from growing the list. */
2757
if (new_size <= heap->allocated)
2758
__archive_errx(1, "Out of memory");
2759
new_pending_files = (struct file_info **)
2760
malloc(new_size * sizeof(new_pending_files[0]));
2761
if (new_pending_files == NULL)
2762
__archive_errx(1, "Out of memory");
2763
memcpy(new_pending_files, heap->files,
2764
heap->allocated * sizeof(new_pending_files[0]));
2765
if (heap->files != NULL)
2767
heap->files = new_pending_files;
2768
heap->allocated = new_size;
2771
file_key = file->key = key;
2774
* Start with hole at end, walk it up tree to find insertion point.
2776
hole = heap->used++;
2778
parent = (hole - 1)/2;
2779
parent_key = heap->files[parent]->key;
2780
if (file_key >= parent_key) {
2781
heap->files[hole] = file;
2784
// Move parent into hole <==> move hole up tree.
2785
heap->files[hole] = heap->files[parent];
2788
heap->files[0] = file;
2791
static struct file_info *
2792
heap_get_entry(struct heap_queue *heap)
2794
uint64_t a_key, b_key, c_key;
2796
struct file_info *r, *tmp;
2802
* The first file in the list is the earliest; we'll return this.
2807
* Move the last item in the heap to the root of the tree
2809
heap->files[0] = heap->files[--(heap->used)];
2812
* Rebalance the heap.
2814
a = 0; // Starting element and its heap key
2815
a_key = heap->files[a]->key;
2817
b = a + a + 1; // First child
2818
if (b >= heap->used)
2820
b_key = heap->files[b]->key;
2821
c = b + 1; // Use second child if it is smaller.
2822
if (c < heap->used) {
2823
c_key = heap->files[c]->key;
2824
if (c_key < b_key) {
2831
tmp = heap->files[a];
2832
heap->files[a] = heap->files[b];
2833
heap->files[b] = tmp;
2839
toi(const void *p, int n)
2841
const unsigned char *v = (const unsigned char *)p;
2843
return v[0] + 256 * toi(v + 1, n - 1);
2850
isodate7(const unsigned char *v)
2854
memset(&tm, 0, sizeof(tm));
2856
tm.tm_mon = v[1] - 1;
2861
/* v[6] is the signed timezone offset, in 1/4-hour increments. */
2862
offset = ((const signed char *)v)[6];
2863
if (offset > -48 && offset < 52) {
2864
tm.tm_hour -= offset / 4;
2865
tm.tm_min -= (offset % 4) * 15;
2867
return (time_from_tm(&tm));
2871
isodate17(const unsigned char *v)
2875
memset(&tm, 0, sizeof(tm));
2876
tm.tm_year = (v[0] - '0') * 1000 + (v[1] - '0') * 100
2877
+ (v[2] - '0') * 10 + (v[3] - '0')
2879
tm.tm_mon = (v[4] - '0') * 10 + (v[5] - '0');
2880
tm.tm_mday = (v[6] - '0') * 10 + (v[7] - '0');
2881
tm.tm_hour = (v[8] - '0') * 10 + (v[9] - '0');
2882
tm.tm_min = (v[10] - '0') * 10 + (v[11] - '0');
2883
tm.tm_sec = (v[12] - '0') * 10 + (v[13] - '0');
2884
/* v[16] is the signed timezone offset, in 1/4-hour increments. */
2885
offset = ((const signed char *)v)[16];
2886
if (offset > -48 && offset < 52) {
2887
tm.tm_hour -= offset / 4;
2888
tm.tm_min -= (offset % 4) * 15;
2890
return (time_from_tm(&tm));
2894
time_from_tm(struct tm *t)
2897
/* Use platform timegm() if available. */
2900
/* Else use direct calculation using POSIX assumptions. */
2901
/* First, fix up tm_yday based on the year/month/day. */
2903
/* Then we can compute timegm() from first principles. */
2904
return (t->tm_sec + t->tm_min * 60 + t->tm_hour * 3600
2905
+ t->tm_yday * 86400 + (t->tm_year - 70) * 31536000
2906
+ ((t->tm_year - 69) / 4) * 86400 -
2907
((t->tm_year - 1) / 100) * 86400
2908
+ ((t->tm_year + 299) / 400) * 86400);
2913
build_pathname(struct archive_string *as, struct file_info *file)
2915
if (file->parent != NULL && archive_strlen(&file->parent->name) > 0) {
2916
build_pathname(as, file->parent);
2917
archive_strcat(as, "/");
2919
if (archive_strlen(&file->name) == 0)
2920
archive_strcat(as, ".");
2922
archive_string_concat(as, &file->name);
2928
dump_isodirrec(FILE *out, const unsigned char *isodirrec)
2930
fprintf(out, " l %d,",
2931
toi(isodirrec + DR_length_offset, DR_length_size));
2932
fprintf(out, " a %d,",
2933
toi(isodirrec + DR_ext_attr_length_offset, DR_ext_attr_length_size));
2934
fprintf(out, " ext 0x%x,",
2935
toi(isodirrec + DR_extent_offset, DR_extent_size));
2936
fprintf(out, " s %d,",
2937
toi(isodirrec + DR_size_offset, DR_extent_size));
2938
fprintf(out, " f 0x%02x,",
2939
toi(isodirrec + DR_flags_offset, DR_flags_size));
2940
fprintf(out, " u %d,",
2941
toi(isodirrec + DR_file_unit_size_offset, DR_file_unit_size_size));
2942
fprintf(out, " ilv %d,",
2943
toi(isodirrec + DR_interleave_offset, DR_interleave_size));
2944
fprintf(out, " seq %d,",
2945
toi(isodirrec + DR_volume_sequence_number_offset, DR_volume_sequence_number_size));
2946
fprintf(out, " nl %d:",
2947
toi(isodirrec + DR_name_len_offset, DR_name_len_size));
2948
fprintf(out, " `%.*s'",
2949
toi(isodirrec + DR_name_len_offset, DR_name_len_size), isodirrec + DR_name_offset);
added
removed
.pc/0004-Patch-from-upstream-rev-2520.patch/libarchive/archive_read_support_format_iso9660.c
